Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Skip to content

Try the next-generation Data Catalog at catalog-beta.data.gov and help shape it with your feedback.

  • Feedback
    • This is a Non-Federal dataset covered by different Terms of Use than Data.gov.

    Geologic Formations

    Metadata Updated: October 11, 2025

    This file of geologic unit polygons is for educational use. There are known errors and omissions. The file is part of a recompilation of the 1968 Geologic Map of Maryland.

    DATA is for educational use only - there are known errors and omissions. These data are only valid for the intended use. The user is responsible for the outcome of the data resulting from use of this product. Neither the licensor, nor the owner of these data makes any warranties of merchantability or fitness for a particular purpose of use. Disclaimer for Towson University, CGIS and for Martin F. Schmidt, Jr. ("GIS FILE ORIGINATORS"): THE LICENSEE EXPRESSLY ACKNOWLEDGES THAT THE DATA CONTAIN SOME NONCONFORMITIES, DEFECTS, OR ERRORS. GIS FILE ORIGINATORS DO NOT WARRANT THAT THE DATA WILL MEET LICENSEE'S NEEDS OR EXPECTATIONS; THAT THE USE OF THE DATA WILL BE UNINTERRUPTED; OR THAT ALL NONCONFORMITIES, DEFECTS, OR ERRORS CAN OR WILL BE CORRECTED. GIS FILE ORIGINATORS ARE NOT INVITING RELIANCE ON THIS DATA, AND THE LICENSEE SHOULD ALWAYS VERIFY ACTUAL DATA. THE DATA AND RELATED MATERIALS CONTAIN THEREIN ARE PROVIDED "AS-IS," WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR USE. Acknowledgement of Towson University Center for Geographic Information Sciences & Martin F. Schmidt, Jr., for the educational GIS file and credit to the original authors/compilers of the source map are expected in products derived from this data.

    Access & Use Information

    Public: This dataset is intended for public access and use. Non-Federal: This dataset is covered by different Terms of Use than Data.gov. License: No license information was provided.

    Downloads & Resources

    Dates

    Metadata Created Date July 26, 2025
    Metadata Updated Date October 11, 2025

    Metadata Source

    Harvested from md json

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date July 26, 2025
    Metadata Updated Date October 11, 2025
    Publisher opendata.maryland.gov
    Maintainer
    Identifier https://opendata.maryland.gov/api/views/d4s2-75bm
    Data First Published 2025-07-22
    Data Last Modified 2025-10-06
    Public Access Level public
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Metadata Catalog ID https://opendata.maryland.gov/data.json
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Harvest Object Id 9a32e7c0-1b51-447b-afca-c30cd152eb1e
    Harvest Source Id ee165ef5-7b35-41a7-b3a5-5479c71b0e58
    Harvest Source Title md json
    Homepage URL https://opendata.maryland.gov/d/d4s2-75bm
    Source Datajson Identifier True
    Source Hash fe3a804d150e0af63362619a9641d9568bd17226518ee26771a7fabd260a5d20
    Source Schema Version 1.1

    Didn't find what you're looking for? Suggest a dataset here.